Evikon E2660-CO-CO2, Руководство пользователя

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E2660-CO-CO2 Rev 19.07.2021
Modbus RTU Communication
RS485 communication interface
Databits: 8
Parity: none / odd / even
Stop bits: 1 or 2
Protocol: Modbus RTU
Supported Modbus functions:
03 – Read multiple registers
06 – Write a single register
Communication parameters
Parameter Permitted values Default
Supported baud rates 1200, 2400, 4800, 9600, 19200, 38400, 57600 9600
Data bits 8 8
Parity none / odd / even none
Stop bits 1, 2 1
Protocol Modbus RTU
Modbus functions
03 - Read multiple registers
06 - Write a single register
Error codes
01 – Illegal function
02 – Illegal data address
03 – Illegal data value
04 – Slave device failure
(details of last error 04 can be read from register 0x0008)
Modbus holding registers
Register addresses are shown 0-based, Addr in hexadecimal, Reg in decimal format.
Modbus holding register numbers MHR are shown in the decimal 1-based format and may
be addressed either from 00001 or 40001 base.
Addr Reg / MHR RW Description Supported values (dec) Default
0x0001 1 / 40002 R Hardware version -
0x0002 2 / 40003 R Software version -
0x0003 3 / 40004 R Product serial number 1...65535 -
0x0004 4 / 40005 RW Slave ID (net address) * 1...247 ** 1
0x0005 5 / 40006 RW Baud rate *
1200, 2400, 4800, 9600,
19200, 38400, 57600
9600
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